Which one is true?

Which does the below command do? w

Which sed options should you use to change the second-to-last instance of variable to rock so it would read: A constant is a variable that is a rock that isn't variable var="A constant is a variable that is a variable that isn't variable" echo "$var" | sed _____

To make a Bash script named script.sh executable, what should you run?

How can you create a shared terminal in a Bash shell?

Wich operator sends the output of ls to a file for later use?

How would you change your Bash shell prompt to the following? HAL>

What is the result of this script? txt=Penguins [[ $txt =~ [a-z]{8} ]]; echo $?

Which arithmetic expression will give the most precise answer?

What is the keyboard shortcut to call up the Bash history search as shown below? (reverse-i-search)`':

In order to extract text from the first column of file called textfile, which command would you use?